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  1. Article: Spontaneous clearance of serum HCV-RNA after splenectomy in a patient with HCV-related liver cirrhosis and portal hypertension: a case report.

    Ogata, Toshiro / Sakai, Terufumi / Shibata, Sho / Kanno, Hiroki / Nakane, Hiroyuki / Aoyagi, Takeshi / Koikawa, Kazuhiro / Sadakari, Yoshihiko / Hirokata, Gentaro / Taniguchi, Masahiko

    Surgical case reports

    2024  Volume 10, Issue 1, Page(s) 94

    Abstract: Background: Spontaneous clearance of chronic hepatitis C virus (HCV) is rare in adults. A T-lymphocyte response is thought to be involved in HCV-RNA clearance. Splenectomy reportedly has a beneficial effect on T cell immune function in patients with ... ...

    Abstract Background: Spontaneous clearance of chronic hepatitis C virus (HCV) is rare in adults. A T-lymphocyte response is thought to be involved in HCV-RNA clearance. Splenectomy reportedly has a beneficial effect on T cell immune function in patients with cirrhosis. To the best of our knowledge, the present report is the first to describe spontaneous clearance of serum HCV-RNA within 1 year after splenectomy in a patient with cirrhosis.
    Case presentation: A 55-year-old man with HCV cirrhosis was transferred to our institution with advanced pancytopenia, splenomegaly, and gastric varices. He had a 1-year history of ascites, edema, and general fatigue. The patient had a Child-Pugh score of 8 and serological type 1 HCV; the HCV-RNA level was 4.7 log IU/mL. Contrast-enhanced computed tomography showed gastric varices and marked splenomegaly (estimated spleen volume of 2175 mL). Esophagogastroduodenoscopy revealed enlarged gastric varices with no red color sign, and the varices were larger than those 1 year prior. He was diagnosed with decompensated HCV-related liver cirrhosis and portal hypertension. We considered direct-acting antiviral (DAA) therapy; however, DAA therapy was not approved in Japan for patients with decompensated cirrhosis at that time. Hand-assisted laparoscopic splenectomy was performed to improve the worsening portal hypertension. Further, we planned the initiation of DAA therapy after surgery, when such therapy would become available. DAA therapy was approved 1 year after splenectomy. At that time, we measured the HCV-RNA level before the initiation of DAA therapy; unexpectedly, however, serum HCV-RNA was not detectable, and the virus continued to disappear during the following 4 years. His liver function (total bilirubin, albumin, and prothrombin time) and pancytopenia improved during the 5 years postoperatively. The serum aspartate and alanine aminotransferase levels normalized between 1 and 5 years postoperatively. Esophagogastroduodenoscopy showed no change in the gastric varices during the 5 years after surgery. The patient remained asymptomatic and continued to do well.
    Conclusions: We have presented a case of spontaneous clearance of HCV-RNA after splenectomy in a patient with cirrhosis and portal hypertension. Splenectomy may be associated with disappearance of HCV-RNA based on previous reports. More cases should be accumulated and evaluated.
    Language English
    Publishing date 2024-04-22
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2809613-7
    ISSN 2198-7793
    ISSN 2198-7793
    DOI 10.1186/s40792-024-01899-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: The five-item modified frailty index predicts long-term outcomes in elderly patients undergoing colorectal cancer surgery.

    Ogata, Toshiro / Sadakari, Yoshihiko / Nakane, Hiroyuki / Koikawa, Kazuhiro / Kanno, Hiroki / Kohata, Ryo / Endo, Kayoko / Tsukahara, Takao / Shimonaga, Koichiro / Kaneshiro, Kazuhisa / Hirokata, Gentaro / Aoyagi, Takeshi / Tsutsumi, Chiyo / Taniguchi, Masahiko

    World journal of surgical oncology

    2023  Volume 21, Issue 1, Page(s) 268

    Abstract: Background: Frailty has been globally recognized as a predictor of adverse postoperative outcomes. Frailty assessment using the five-factor modified frailty index (5-mFI) has recently gained traction; however, long-term outcomes are unknown in ... ...

    Abstract Background: Frailty has been globally recognized as a predictor of adverse postoperative outcomes. Frailty assessment using the five-factor modified frailty index (5-mFI) has recently gained traction; however, long-term outcomes are unknown in colorectal cancer (CRC) surgery. This study aimed to investigate whether the 5-mFI predicted long-term survival and cause of death on the basis of frailty severity in elderly patients who underwent CRC surgery and to determine the risk factors for mortality.
    Methods: A total of 299 patients underwent CRC surgery with curative intent between January 2013 and December 2017. Patients were divided into three groups by the 5-mFI score: group 1 (5-mFI: 0 or 1; n = 164): no frailty; group 2 (5-mFI: 2; n = 91): moderate frailty; and group 3 (5-mFI: ≥ 3; n = 44): severe frailty. Clinicopathological variables, namely comorbidities, 5-mFI, prognostic nutrition index, operative/postoperative data, and outcome, including cause of death, were compared between the three groups. To identify factors associated with death from CRC- and non-CRC-related causes, univariate and multivariate analyses using a Cox regression model were performed.
    Results: The immediate postoperative morbidity of patients with Clavien-Dindo grade ≥ III complications (9.1%) in group 3 was not significantly different from that in group 1 (9.1%) or group 2 (14.3%); however, the 30-day mortality rate (4.5%) in group 3 was significantly higher. Long-term disease-free survival was similar between frailty groups, suggesting that CRC surgery provides oncological benefit to patients irrespective of frailty. The 5-year survival rates in groups 1, 2, and 3 were 83.5%, 71.2%, and 47.9%, respectively, showing a significantly lower survival rate as frailty advanced. Sixty percent of the deaths in frail patients were due to respiratory failure and cardiovascular diseases. Multivariate analysis demonstrated that advanced age, higher 5-mFI score, and longer postoperative hospital stay were risk factors for mortality unrelated to CRC. Multivariate analysis also revealed that advanced tumor stage, carcinoembryonic antigen ≥ 5 ng/ml, undifferentiated tumor, and R1 resection were risk factors for CRC-related mortality.
    Conclusions: The 5-mFI score can predict postoperative short- and long-term outcomes and risk factors for mortality unrelated to CRC. Additionally, long-term survival was negatively associated with the 5-mFI score.
    MeSH term(s) Aged ; Humans ; Digestive System Surgical Procedures ; Cardiovascular Diseases ; Disease-Free Survival ; Length of Stay ; Colorectal Neoplasms/surgery
    Language English
    Publishing date 2023-08-26
    Publishing country England
    Document type Journal Article
    ZDB-ID 2118383-1
    ISSN 1477-7819 ; 1477-7819
    ISSN (online) 1477-7819
    ISSN 1477-7819
    DOI 10.1186/s12957-023-03150-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Simplified and Optimized Immune Score for Colorectal Cancer Microenvironment.

    Nakane, Hiroyuki / Sudo, Tomoya / Kawahara, Akihiro / Yomoda, Takatou / Shigaki, Takahiro / Fujiyoshi, Kenji / Ohchi, Takafumi / Koushi, Kenichi / Yoshida, Takefumi / Ogata, Toshiro / Fujita, Fumihiko / Akagi, Yoshito

    Anticancer research

    2023  Volume 43, Issue 8, Page(s) 3793–3798

    Abstract: Background/aim: Immunoscore (IS) is an important evaluation method for the tumor immune microenvironment (TIME); however, formal IS analysis requires designated reagents and a specific digital pathology software and image data analysis. This study aimed ...

    Abstract Background/aim: Immunoscore (IS) is an important evaluation method for the tumor immune microenvironment (TIME); however, formal IS analysis requires designated reagents and a specific digital pathology software and image data analysis. This study aimed to investigate whether simplified IS (s-IS) can substitute formal IS upon modifying the location of the assessment of the numbers of immune cells and verify that the addition of T cell subset markers to s-IS can enhance the prognostic impact in patients with colorectal cancer (CRC).
    Patients and methods: A total of 82 CRC cases were included in this study. Immunohistochemical analysis was performed using CD3/CD8/CD45RO/FOXP3 on tissue specimens; the expression levels were calculated in the center and perimeter of the tumors using digital pathology. The clinical prognostic significance of the expression of these markers was investigated by concordance index comparison according to their location of assessment and combinations.
    Results: In the univariate analysis, the CD3, CD8, and FOXP3 levels were significant prognostic factors. Moreover, for each T cell subset marker, the assessment of each T cell subset marker at the tumor perimeter had a stronger prognostic power than that in the tumor center. The modified s-IS (s-IS plus FOXP3 evaluation) was an independent prognostic factor for recurrence-free survival and overall survival through multivariate analysis and demonstrated the best prognostic power compared to other T subset marker combinations.
    Conclusion: In CRC, TIME evaluation could be simplified by assessing CD3- and CD8-positive T cells in the perimeter of the tumor, and additional FOXP3 evaluation would empower the ability of s-IS evaluation in prognostic assessment.
    MeSH term(s) Humans ; Neoplasm Staging ; Tumor Microenvironment ; Colorectal Neoplasms/pathology ; CD8-Positive T-Lymphocytes ; Prognosis ; CD3 Complex ; Forkhead Transcription Factors/metabolism ; Lymphocytes, Tumor-Infiltrating
    Chemical Substances CD3 Complex ; Forkhead Transcription Factors
    Language English
    Publishing date 2023-07-27
    Publishing country Greece
    Document type Journal Article
    ZDB-ID 604549-2
    ISSN 1791-7530 ; 0250-7005
    ISSN (online) 1791-7530
    ISSN 0250-7005
    DOI 10.21873/anticanres.16565
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: A Case of Immediate Anastomotic Leakage After Low Anterior Resection for Rectal Cancer.

    Fujita, Fumihiko / Yasushi, Kenichi / Ohchi, Takafumi / Mizobe, Tomoaki / Ogata, Suguru / Nakane, Hiroyuki / Koushi, Kenichi / Yoshida, Takefumi / Yamaguchi, Keizo / Sudo, Tomoya / Kinugasa, Tetsushi / Akagi, Yoshito

    The Kurume medical journal

    2023  Volume 68, Issue 2, Page(s) 149–152

    Abstract: A man in his seventies was referred to our hospital for radical therapy for advanced rectal cancer with multiple liver metastases. A colonic stent had already been placed in his rectum at the previous hospital because of malignant colorectal obstruction, ...

    Abstract A man in his seventies was referred to our hospital for radical therapy for advanced rectal cancer with multiple liver metastases. A colonic stent had already been placed in his rectum at the previous hospital because of malignant colorectal obstruction, so our therapeutic strategy was to perform systematic chemotherapy after resection of the primary tumor. Laparoscopic low anterior resection with a covering stoma was performed under general anesthesia. At about one hour after the surgery, the patient had sudden abdominal pain with watery diarrhea, and a similar discharge from his drainage tube. We suspected peritonitis caused by bowel perforation and emergency surgery was performed. The operative findings showed that his peritonitis was caused by anastomotic leakage from the rectum. Radical lavage of the abdominal space and reconstruction of colostomy was performed. The patient gradually recovered and we were able to start systematic chemotherapy at one month after the surgery. Anastomotic leakage immediately after anterior resection caused by watery diarrhea is rare, and it may be concerned with several issues. The covering stoma is intended to stop anastomotic leakage but it cannot prevent all cases of leakage especially when obstruction is present. We recommend that preventive measures be taken against anastomotic leakage, including intraoperative leakage tests or anal decompression tube placement.
    MeSH term(s) Male ; Humans ; Anastomotic Leak/etiology ; Anastomotic Leak/surgery ; Anastomotic Leak/prevention & control ; Rectal Neoplasms/surgery ; Rectal Neoplasms/pathology ; Rectum/pathology ; Rectum/surgery ; Laparoscopy ; Retrospective Studies
    Language English
    Publishing date 2023-04-17
    Publishing country Japan
    Document type Case Reports ; Journal Article
    ZDB-ID 603905-4
    ISSN 1881-2090 ; 0023-5679
    ISSN (online) 1881-2090
    ISSN 0023-5679
    DOI 10.2739/kurumemedj.MS682010
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Colorectal cancer surgery in elderly patients 80 years and older: a comparison with younger age groups.

    Ogata, Toshiro / Yoshida, Naohiro / Sadakari, Yoshihiko / Iwanaga, Ayako / Nakane, Hiroyuki / Okawara, Kazuma / Endo, Kayoko / Kaneshiro, Kazuhisa / Hirokata, Gentaro / Aoyagi, Takeshi / Shima, Hiroji / Taniguchi, Masahiko

    Journal of gastrointestinal oncology

    2022  Volume 13, Issue 1, Page(s) 137–148

    Abstract: Background: A reduction in complications and mortality can be observed over the last few decades among elderly patients in the early postoperative period for colorectal cancer (CRC) surgery, but long-term outcomes are largely unknown. This study aimed ... ...

    Abstract Background: A reduction in complications and mortality can be observed over the last few decades among elderly patients in the early postoperative period for colorectal cancer (CRC) surgery, but long-term outcomes are largely unknown. This study aimed to investigate the long-term outcomes of elderly patients 80 years and older after CRC surgery in comparison with younger age groups. The influence of clinical, oncological, and physical parameters on outcome were retrospectively analyzed.
    Methods: A total of 346 patients underwent CRC surgery with curative intent between January 2013 and December 2017. Patients were divided into three age groups: younger than 60 (n=47), between 60 and 79 (n=218), and 80 and older (n=81). Clinicopathological variables including comorbidity, modified frailty index, prognostic nutrition index (PNI), operative/postoperative data, and outcome including cause of death were compared among age groups. To identify factors associated with death from CRC and other causes, univariate and multivariate analyses using the Cox proportional hazards model were performed.
    Results: Immediate postoperative morbidity of patients with Clavien-Dindo grades of III or greater (16.0%) and the 30-day mortality rate (2.5%) of patients 80 years and older were not statistically different from those of younger age groups. Long-term disease-free survival was also similar among age groups, suggesting CRC surgery provides oncological benefit to patients irrespective of age. Multivariate analysis revealed that R1 resection, advanced tumor stage, carcinoembryonic antigen (CEA) level of >5 ng/mL, undifferentiated tumor, and longer postoperative hospital stay were risk factors for CRC death. Long-term overall survival was significantly reduced in comparison to younger age groups. Seventy percent of deaths in elderly patients during follow-up were primarily from respiratory failure and cardiovascular disease. Multivariate analysis demonstrated that advanced age, frailty, low PNI, and open procedure were risk factors for other causes of mortality.
    Conclusions: Elderly patients undergoing CRC surgery appeared to enjoy similar oncological benefits as younger age groups. Since both modified frailty index and PNI were correlated with mortality unrelated to CRC, preoperative assessment of these factors can be important for predicting outcome and selecting patients for prehabilitation.
    Language English
    Publishing date 2022-02-28
    Publishing country China
    Document type Journal Article
    ZDB-ID 2594644-4
    ISSN 2219-679X ; 2078-6891
    ISSN (online) 2219-679X
    ISSN 2078-6891
    DOI 10.21037/jgo-21-627
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Mismatch repair proteins expression and tumor-infiltrating T-cells in colorectal cancer.

    Shigaki, Takahiro / Fujiyoshi, Kenji / Sudo, Tomoya / Kawahara, Akihiro / Nakane, Hiroyuki / Yomoda, Takato / Nagasu, Sachiko / Kinugasa, Tetsushi / Akiba, Jun / Fujita, Fumihiko / Akagi, Yoshito

    Oncology letters

    2022  Volume 24, Issue 5, Page(s) 396

    Abstract: Microsatellite instability (MSI) and tumor mutational burden (TMB) are indicators of the tumor mutational load, which can lead to immune cell recruitment. By contrast, the number of tumor-infiltrating T cells (TITs) is indicative of the host immune ... ...

    Abstract Microsatellite instability (MSI) and tumor mutational burden (TMB) are indicators of the tumor mutational load, which can lead to immune cell recruitment. By contrast, the number of tumor-infiltrating T cells (TITs) is indicative of the host immune response to tumor cells. The present study evaluated if the expression of mismatch repair (MMR) proteins can be used as a precise tool to assess immunogenicity in the tumor microenvironment. A total of 73 colorectal cancer cases were enrolled in the present study. MMR protein expression was assessed using four-antibodies immunohistochemistry (IHC) targeting
    Language English
    Publishing date 2022-09-21
    Publishing country Greece
    Document type Journal Article
    ZDB-ID 2573196-8
    ISSN 1792-1082 ; 1792-1074
    ISSN (online) 1792-1082
    ISSN 1792-1074
    DOI 10.3892/ol.2022.13516
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Overexpression of an Archaeal Geranylgeranyl Diphosphate Synthase in Escherichia coli Cells

    OHTO, Chikara / NAKANE, Hiroyuki / HEMMI, Hisashi / OHNUMA, Shin-ichi / OBATA, Shusei / NISHINO, Tokuzo

    Bioscience, biotechnology, and biochemistry. 1998 Jan. 1, v. 62, no. 6

    1998  

    Abstract: An archaeal geranylgeranyl diphosphate synthase was overexpressed in Escherichia coli cells as fusion proteins. These fusion proteins retained their thermostability and had higher specific activity than did a partially purified native enzyme Previously ... ...

    Abstract An archaeal geranylgeranyl diphosphate synthase was overexpressed in Escherichia coli cells as fusion proteins. These fusion proteins retained their thermostability and had higher specific activity than did a partially purified native enzyme Previously reported. We purified 24.3 mg of MBP (maltose-binding protein)-fusion protein and 5.4 mg of GST (glutathione S-transferase)-fusion protein from a one-liter culture of E. coli. The MBP-fusion proteins existed in dimer, tetramer, octamer, or dodecamer form, and their product specificities were altered according to the oligomerization. The MBP-fusion protein has protease-sensitive sites in the portion corresponding to geranylgeranyl diphosphate synthase.
    Keywords Archaea ; Escherichia coli ; biotechnology ; geranylgeranyl diphosphate synthase ; glutathione transferase ; oligomerization ; thermal stability
    Language English
    Dates of publication 1998-0101
    Size p. 1243-1246.
    Publishing place Japan Society for Bioscience, Biotechnology, and Agrochemistry
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 1106450-x
    ISSN 1347-6947 ; 0916-8451
    ISSN (online) 1347-6947
    ISSN 0916-8451
    DOI 10.1271/bbb.62.1243
    Database NAL-Catalogue (AGRICOLA)

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